165 research outputs found

    Performance of deep oxidation ditch

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    Performance of deep oxidation ditc

    Multi-modal Medical Neurological Image Fusion using Wavelet Pooled Edge Preserving Autoencoder

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    Medical image fusion integrates the complementary diagnostic information of the source image modalities for improved visualization and analysis of underlying anomalies. Recently, deep learning-based models have excelled the conventional fusion methods by executing feature extraction, feature selection, and feature fusion tasks, simultaneously. However, most of the existing convolutional neural network (CNN) architectures use conventional pooling or strided convolutional strategies to downsample the feature maps. It causes the blurring or loss of important diagnostic information and edge details available in the source images and dilutes the efficacy of the feature extraction process. Therefore, this paper presents an end-to-end unsupervised fusion model for multimodal medical images based on an edge-preserving dense autoencoder network. In the proposed model, feature extraction is improved by using wavelet decomposition-based attention pooling of feature maps. This helps in preserving the fine edge detail information present in both the source images and enhances the visual perception of fused images. Further, the proposed model is trained on a variety of medical image pairs which helps in capturing the intensity distributions of the source images and preserves the diagnostic information effectively. Substantial experiments are conducted which demonstrate that the proposed method provides improved visual and quantitative results as compared to the other state-of-the-art fusion methods.Comment: 8 pages, 5 figures, 6 table

    A Narrative Review on Priorities of Mental Health Issues among Transgenders: “So Near, Yet so Far”

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    In recent years there is a rapid rise in coming out of sexual and gender minority adults to their family members and society. Unfortunately, studies on unmet health needs of transgenders with a special focus to mental health is under-researched in India. The current paper aimed to explore about the mental health of transgenders and a literature search was done using PubMed, Google Scholar, and Scopus databases for the following medical subject headings (MeSH) key terms “transgender”, “mental Health”, “social stigma”, “LGBT”, “gender dysphoria”, “genderqueer”, “intersex”, “MSM”, “hijra”, “gay”, “lesbian”, “bisexual”, and “homosexual”. Transgender individuals were found to show high rates of mental health concerns. The most common mental health problems that we have shown in this review article are depression, obsessive-compulsive disorders, generalized anxiety disorders, suicidal attempts and bipolar disorders. Transgender people are at more risk for mental health problems than their heterogenous counterparts. The intervention program to eliminate or reduce these problems needs to be planned carefully, considering all the determinants

    Numerical analysis of film boiling around horizontal cylindrical surfaces

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    Papers presented to the 11th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, South Africa, 20-23 July 2015.Stability of vapor film over a horizontal heater drags attention due to its wide spread applications in nuclear reactors, metal processing, manufacturing and chemical refineries. Existence of vapor film around the heater can cause advantages as well as disadvantages for various applications in industry and daily life. Hence understanding the film formation and its subsequent release in the form of bubble are dealt carefully by researchers in heat transfer community. Critical vapor thickness and average heat flux are the essential parameters which govern the release of vapor mass in the form of isolated bubbles from the surface. Experimental evidences have been reported in order to find out film dynamics for some specific fluids. However understanding it from the fundamental physics is still due and becomes a major challenge for heat transfer community. In this paper, numerical analysis of the film boiling heat transfer on a horizontal cylinder is presented to determine the effect of superheating on the heat transfer coefficient and film thickness in a pool. Findings from the present study will develop knowhow about the film formation and its role in enhancing the boiling heat transfer coefficient.am201

    Cosmology with decaying tachyon matter

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    We investigate the case of a homogeneous tachyon field coupled to gravity in a spatially flat Friedman-Robertson-Walker spacetime. Assuming the field evolution to be exponentially decaying with time we solve the field equations and show that, under certain conditions, the scale factor represents an accelerating universe, following a phase of decelerated expansion. We make use of a model of dark energy (with p=-\rho) and dark matter (p=0) where a single scalar field (tachyon) governs the dynamics of both the dark components. We show that this model fits the current supernova data as well as the canonical \LambdaCDM model. We give the bounds on the parameters allowed by the current data.Comment: 14 pages, 6 figures, v2, Discussions and references addede

    A New Multimodal Medical Image Fusion based on Laplacian Autoencoder with Channel Attention

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    Medical image fusion combines the complementary information of multimodal medical images to assist medical professionals in the clinical diagnosis of patients' disorders and provide guidance during preoperative and intra-operative procedures. Deep learning (DL) models have achieved end-to-end image fusion with highly robust and accurate fusion performance. However, most DL-based fusion models perform down-sampling on the input images to minimize the number of learnable parameters and computations. During this process, salient features of the source images become irretrievable leading to the loss of crucial diagnostic edge details and contrast of various brain tissues. In this paper, we propose a new multimodal medical image fusion model is proposed that is based on integrated Laplacian-Gaussian concatenation with attention pooling (LGCA). We prove that our model preserves effectively complementary information and important tissue structures.Comment: 10 pages, 6 figures, % table

    Intel 8085 Microprocessor Simulation Tool OneX Simulator

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    In spite of the advancement in computer architecture and availability of microprocessors (ex. Intel Core i7 etc.) with speed thousand times greater, microprocessor 8085 is still widely used in academia for education and research purposes. To make the microprocessor 8085 more accessible and portable, many simulators for the same have been introduced over the past years with various level of user friendliness. This paper proposes a simple yet powerful enhanced simulator, namely OneX which is capable of real time code parsing, error handling and label parsing for different addresses. Proposed software also addresses few flaws present in the earlier version of 8085 microprocessor software. The latest copy of the software is available at (https://github.com/Pronoy999/Project-OneX

    Proceedings of the NIAS Workshop to discuss Power Distribution Sector Reforms in India - Role of Regulators and the Private Sector (NIAS Workshop Report No. NIAS/NSE/EECP/U/WR/20/2022)

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    Independent regulation is at the core of the electricity reform legislation enacted in India as Electricity Act, 2003. It addressed the power distribution segment, which is the cash register for the entire sector, by transferring the reins of governance of the sector from government to regulatory agencies. Yet, nearly two decades later, government seems to have wrested back control, reducing the regulator to a mere accounting intermediary. The accumulated losses of all State-owned DISCOMs at the end of 2020 have crossed Rs.5 lakh crore even after three rounds of reform between 2003 and 2019. In 2021, the Government of India has decided to pump in Rs.3 lakh crore more under the ‘Revamped Distribution Sector Scheme’ to turn around the DISCOMs. This approach is unsustainable and flags serious managerial deficiencies within the State-owned DISCOMs and the effectiveness of the regulatory mechanism in this sector. One of the key reasons for the continuing losses of DISCOMs is the steep escalation in power purchase cost which accounts for 70-80% of the annual expenditure of the DISCOMs. The sharp hike in PPC that cannot be recovered from the ultimate consumers immediately has a cascading effect on generation and transmission companies, with overdue amounts of Rs.1 lakh crore from DISCOMs. Further, due to the cash crunch, most DISCOMs cannot invest in upgrading the sub-distribution infrastructure. Therefore, it is evident that structural reforms introduced in the form of unbundling and corporatization of vertically integrated utilities and independent regulation and the new governance paradigm designed to depoliticize decision-making in the sector have spectacularly failed. In this context, the workshop sought views from stakeholders on the course corrections and the way forward by inter alia, addressing the following key questions: • What role can regulators play in improving the performance of the State-owned DISCOMs? • Is privatization of DISCOMs with a large share of agricultural consumption possible? If so, under what structure (100% privatization or PPP or Distribution Franchisee) and policy guidelines? • What are the potential gains and pitfalls of privatizing loss-making DISCOMs? How can the Regulators play a role in ensuring a smooth transition? • Regulatory independence and to some extent, even autonomy, despite the many protections accorded in the statute, have remained illusory. How to address this issue? Does it call for amendments to the selection committee, selection criteria and measures to insulate them from political interference? The Energy, Environment and Climate Change Program in NIAS organized this Workshop on 9 April 2022 to enable experts and key stakeholders to deliberate on the above issues and suggest the way forward. This report presents the gist of each talk during the workshop and the panel discussions, culminating in concrete proposals to ensure the effectiveness of the independent regulatory paradigm and improve the long-term viability of the DISCOMs. The implementation of these proposals is critical to facilitate the ongoing energy transition while safeguarding public interes
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